There is a command line parameter that you can use that will specify the home directory where the Policy Manager will save things like Policy Templates and the ssg.properties file:
-Duser.home="C:\Users\test\.l7tech2"
Just change "C:\Users\test\.l7tech2" to a shared directory that all of your users will have access to. There is a batch file in the application directory that you could use to add this parameter and have everyone use this to start the Policy Manager. You could alternately add this parameter to the INI file in the application directory, which the .exe reads by default.